When you're buying groceries, buying things in bulk can save you a ton of money. If you have a smaller household, freezing your excess milk and other dairy products can help you make sure none of that food goes unused.

Warehouse clubs like Costco and Sam's Club sell double packs of one gallon milk jugs. If you buy your milk that way, you can save some cash, but not everyone can use up that much milk in a couple weeks. The money-saving YouTube channel hip2save suggests you freeze your excess milk to buy yourself some time. Open the jug you're going to freeze, pour yourself a glass to give the milk room to expand when it freezes—very important—and find a home for it in the freezer. This nets you an extra month before the milk starts to spoil. When you're ready to use the frozen milk, let it thaw completely in the fridge. Shake it well before using again and you're all set. The video also shows you how to freeze cheese—making it last an extra six months—and other dairy products, so keep watching to learn more.